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Innovative stair climber using associated wheels

Girish Sudhir MODAK,Manmohan Manikrao BHOOMKAR

《机械工程前沿（英文）》 2016年第11卷第3期页码 299-310 doi: 10.1007/s11465-016-0374-1

摘要：

The study proposes an innovative and completely new but low-cost configuration of a platform that can easily climb stairs. This platform serves the purpose of a chassis. Different versions, such as staircase-climbing wheelchair or staircase-climbing trolley for material transferring, can be derived depending on the structure built on the platform. The driving wheels have a shape that completely matches with the profile of the steps. Complex components are eliminated. Thus, this platform is conveniently applicable in the configurations useful for climbing staircases.

关键词： stair-climbing platform matching wheels impaired mobility affordable configuration

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Role of stair-climbing test in predicting postoperative cardiopulmonary complications in elderly patients

Pei-Tu REN BM, Bao-Chun LU MM, Zhi-Liang CHEN MM, Hong FU MM,

《医学前沿（英文）》 2010年第4卷第1期页码 77-81 doi: 10.1007/s11684-010-0005-x

摘要： One hundred and twenty-six patients above 80 years old with biliary diseases undergoing operations in Shaoxing People’s Hospital from Jan. 2002 to Jan. 2007 were analyzed retrospectively. All patients performed a preoperative stair-climbing test, and the risks for cardiopulmonary €complications were evaluated with pair-matching and linear correlations analysis between stair-climbing height (h) and left ventricular ejective factor (EF), forced vital capacity (FVC) and forced expiratory volume in one second (FEV). There was a significant difference in the incidence of cardiopulmonary complications among different stair-climbing heights. Stair-climbing heights were positively related with EF, FVC and FEV. This suggests that the stair-climbing test is an effective and simple method for predicting cardiopulmonary complications in elderly patients with biliary diseases.

关键词： biliary disease cardiopulmonary complication stair-climbing test

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Evacuation strategies for vertical ship lift during initial fire: Integrated application of stairs and elevators

Shu CHEN, Menghan SHANG, Jianping WANG

《工程管理前沿（英文）》 2021年第8卷第1期页码 135-147 doi: 10.1007/s42524-020-0125-1

摘要： Vertical ship lifts (VSLs) are widely used in navigation facilities worldwide because of their efficiency and low cost. Although several researchers have investigated fire evacuation strategies for reducing potential safety hazards in VSLs, an effective and integrated application of stairs and elevators when a fire occurs in a VSL is necessary. Several evacuation routes were analyzed according to VSL structure and evacuation times in this study. Objective function corresponding to the minimum vertical evacuation time and related simulation model was subsequently developed to obtain a cooperative evacuation plan considering different numbers of evacuees. The Three Gorges ship lift was used as an example, and simulation results indicate that number of evacuees and exit selection are the main influencing factors of the total evacuation time in the stair- and elevator-coordinated evacuation mode. Furthermore, the distance between people trapped in ship reception chamber and evacuation exits affects evacuees’ choice of exits. The proposed model can provide a theoretical reference for evacuation research during initial fire events in VSLs.

关键词： vertical ship lift initial fire fire evacuation numerical simulation stair elevator